GB839034A - Halogenated hydrocarbons and compositions and methods of production thereof - Google Patents
Halogenated hydrocarbons and compositions and methods of production thereofInfo
- Publication number
- GB839034A GB839034A GB18023/46A GB1802346A GB839034A GB 839034 A GB839034 A GB 839034A GB 18023/46 A GB18023/46 A GB 18023/46A GB 1802346 A GB1802346 A GB 1802346A GB 839034 A GB839034 A GB 839034A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polymerization
- fluorine
- trifluorochloroethylene
- cfcl
- matter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
- C07C19/14—Acyclic saturated compounds containing halogen atoms containing fluorine and bromine
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/013—Preparation of halogenated hydrocarbons by addition of halogens
- C07C17/04—Preparation of halogenated hydrocarbons by addition of halogens to unsaturated halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
- C07C17/208—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being MX
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/23—Preparation of halogenated hydrocarbons by dehalogenation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/26—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton
- C07C17/272—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by addition reactions
- C07C17/278—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by addition reactions of only halogenated hydrocarbons
- C07C17/281—Preparation of halogenated hydrocarbons by reactions involving an increase in the number of carbon atoms in the skeleton by addition reactions of only halogenated hydrocarbons of only one compound
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
- C07C19/08—Acyclic saturated compounds containing halogen atoms containing fluorine
- C07C19/10—Acyclic saturated compounds containing halogen atoms containing fluorine and chlorine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Halogenated hydrocarbons containing fluorine are prepared by treating a fluorinated hydrocarbon with an elemental halogen, metal halide or hydrogen halide as a halogenating agent such that a different compound is produced having no fewer carbon atoms than the starting material, and in particular by the following processes: (a) fluorinating perfluorohalo - olefines to obtain dimer addition or simple addition products (e.g. CFCl=CFCl+F2 yield CF2Cl-CFCl-CFCl-CF2Cl together with some C2Cl2F4 and C2Cl3F3 and minor amounts of C2ClF5, C2Cl4F2, C4Cl5F5 and C4Cl6F4); (b) fluorinating a saturated perhalogenated hydrocarbon, containing fluorine and one or more other halogens, with elemental fluorine, a metal fluoride or hydrogen fluoride to replace said other halogen or halogens by fluorine (e.g. CFCl2CCl2CCl2-CFCl2+SbF3+SbCl5 give CF2ClCCl2CCl2CF2Cl); (c) chlorinating or brominating perfluorohaloolefines with elemental chlorine or bromine to obtain simple addition products (e.g. CF2ClCFClCF=CF2 yields CF2ClCFClCFClCF2Cl or CF2ClCFClCFBrCF2Br); (d) subjecting products of (a), (b) or (c) to dehalogenation or (when hydrogen is present) dehydrohalogenation to obtain an unsaturated compound (e.g. CF2ClCFClCFClCF2Cl with zinc dust in alcohol or butyl carbitol gives CF2=CF-CF=CF2); (e) replacement of allylic chlorine by a functional group, e.g. one derived from an alkali metal salt (e.g. sodium cyanide) or from ammonia or an amine (allylic fluorine is stated to react analoously but less readily). Apparatus suitable for the fluorination process and for the dechlorination process is described with the aid of drawings. The Specification as open to inspection under Sect. 91 of the Patents and Designs Acts, 1907-1946, comprises also the subject-matter of Specification 839,035, and the following further processes: (a) polymerization of perfluorobutadiene by the action of benzoyl peroxide and light; (b) polymerization of trifluorochloroethylene by the action of bis-trichloroacetyl peroxide at 0 DEG C. or below, or of AlCl3, BF3 or SnCl4 at 30 DEG C.; (c) pyrolysis of 1 : 2-dichloroperfluorocyclobutane to form trifluorochloroethylene and some 3 : 4-dichloroperfluorobutene-1; (d) thermal depolymerization of high molecular weight polymers, if desired in the presence of CoF3 or fluorine. This subject-matter does not appear in the Specification as accepted.ALSO:The Specification as open to inspection under Sect. 91 of the Patents and Designs Acts, 1907-1946, comprises the subject-matter of Specification 839,035, and the following further processes: (a) polymerization of perfluorobutadiene by the action of benzoyl peroxide and light; (b) polymerization of trifluorochloroethylene by the action of bis-trichloroacetyl peroxide at 0 DEG C. or below to produce a white spongy solid which can be hot-pressed, extruded, milled, rolled or formed into fibres; (c) polymerization of trifluorochloroethylene with AlCl3, BF3 or SnCl4 (e.g. by dissolving in CF2ClCF2Cl and warming to 30 DEG C. with AlCl3 in a sealed tube). This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US839034XA | 1945-06-25 | 1945-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB839034A true GB839034A (en) | 1960-06-29 |
Family
ID=22181395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18023/46A Expired GB839034A (en) | 1945-06-25 | 1946-06-14 | Halogenated hydrocarbons and compositions and methods of production thereof |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB839034A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0039471A1 (en) * | 1980-05-05 | 1981-11-11 | Hoechst Aktiengesellschaft | Process for the preparation of 2-chloro-1,1,1,2,3,3,3-heptafluoropropane |
CN107586251A (en) * | 2017-07-26 | 2018-01-16 | 江苏蓝色星球环保科技股份有限公司 | One kind 1,1, Isosorbide-5-Nitrae, the preparation method of the butylene of 4,4 hexafluoro 2 |
-
1946
- 1946-06-14 GB GB18023/46A patent/GB839034A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0039471A1 (en) * | 1980-05-05 | 1981-11-11 | Hoechst Aktiengesellschaft | Process for the preparation of 2-chloro-1,1,1,2,3,3,3-heptafluoropropane |
CN107586251A (en) * | 2017-07-26 | 2018-01-16 | 江苏蓝色星球环保科技股份有限公司 | One kind 1,1, Isosorbide-5-Nitrae, the preparation method of the butylene of 4,4 hexafluoro 2 |
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